PRODUCT DATASHEET
AAT3172
ChargePump
TM
Typical Characteristics
V
IN
= 3.6V, C
IN
= 4.7µF, C
OUT
= 2.2µF, C
1
= C
2
= 1µF, T
A
= 25°C, unless otherwise noted.
High Current LED Flash Driver Charge Pump IC
Load Characteristic
(V
IN
= 3.0V; 1.5X Mode; 50mA/ch Load)
Load Characteristic
(V
IN
= 3.6V; 1.5X Mode; 152mA/ch Load)
V
IN
(100mV/div)
V
OUT
(200mV/div)
V
SINK
(200mV/div)
V
IN
(100mV/div)
V
OUT
(200mV/div)
V
SINK
(200mV/div)
2µs/div
2µs/div
Load Characteristic
(V
IN
= 2.8V; 2X Mode; 152mA/ch Load)
4.8
Voltage Mode Load Regulation
Output Voltage (V)
V
IN
(100mV/div)
V
OUT
(200mV/div)
4.7
4.6
4.5
4.4
4.3
4.2
4.1
0
15
30
45
60
75
90
105
120
135
150
V
IN
= 4.2V
V
IN
= 3.7V
V
IN
= 3.3V
V
SINK
(200mV/div)
2µs/div
Load Current (mA)
Voltage Mode Line Regulation
4.8
Voltage Mode Load Response
(V
IN
= 3.7V)
Output Voltage (V)
4.7
4.6
4.5
4.4
4.3
4.2
4.1
3.0
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4.0
4.1
4.2
I
OUT
= 10mA
V
OUT
(100mV/div)
I
OUT
= 120mA
I
OUT
= 80mA
I
OUT
(100mA/div)
100mA
10mA
4.51V
I
OUT
= 30mA
Input Voltage (V)
5ms/div
6
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3172.2008.04.1.6
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